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379 articles for “losses”
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High frequency design approach and feasibility study of HBT based W-band (90.0GHz-100.0GHz) amplifier using 130nm SiGe based BiCMOS technology
Abstract: This paper present high frequency design approach and feasibility study of HBT (Hetero Junction Bipolar Transistor) based two stage cascode amplifiers at W-band (90.0GHz-100.0GHz). The proposed amplifier has design using 130nm SiGe based BiCMOS technology. This paper used low cost technology for designing of w-band amplifier and this is novelty of this paper. The schematic design and feasibility study has been carried out using Cadence software. The selection of active …
Published in International Journal of Digital Communication and Analog Signals · Vol. 7, Issue 2, 2021 · pp. 1–7 Read article
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Optimal Location of Static Var Compensator Using DE Algorithm
Abstract: This paper discusses on the optimal location of Static Var Compensator (SVC) using Differential evolution (DE) algorithm. FACTS devices are employed to improve the power transfer capability and voltage profile in power system networks. Here, the optimal location to place an SVC is identified depending on the power flow, voltage profile and transmission losses. The ability of SVC to improve voltage profile and reduce losses is also analysed. SVC is …
Published in International Journal of Electrical Power System and Technology · Vol. 2, Issue 2, 2016 · pp. 1–8 Read article
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Design and Testing of Transformer Protection System in Substation
Abstract: This study proposes a methodology and guidelines for distribution engineers to show that by testing and auditing of DTs, a generalized computer program is used to evaluate any given DTs system. This results in improving the stability as well as energy handling capacity of the system at minimum cost. A distribution network is selected for rehabilitation on the basis of certain planning criteria such as voltage drop, power loss equipment …
Published in International Journal of Electrical Power System and Technology · Vol. 5, Issue 1, 2019 · pp. 17–23 Read article
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Power and Body-Bias Optimization for FD-SOI Systems-Via Simulations and Algorithms
Abstract: The field of Integrated Circuits is very vast from digital to analog circuits dealing withvarious types of digital circuits our paper deals with the CMOS digital circuits poweroptimization. The paper deals auto-characterizing different FD-SOI circuits with certainmachine learning techniques verifying their outputs along with managing power losses andbody bias voltages in different temperature conditions the machine learning techniques helpoptimize power losses by varying body bias voltages according to the functional …
Published in International Journal of Electrical Power System and Technology · Vol. 6, Issue 1, 2020 · pp. 45–55 Read article
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DESIGN AND ANALYSIS OF ITERATED STAR SHAPED STAR SLOTTED FRACTAL ANTENNA
Abstract: In this paper, A Novel star shaped iterated fractal antenna with circular slot in midway is proposed. Proposed antenna is very small in size and ground of antenna also defected by cutting approximately half PEC material. In this proposed antenna number of iterations has been applied. This proposed Antenna is simulated by CST-MWS (Computer Simulation Technology – Microwave Studio) and different simulated results are analyzed. The self similarity property of …
Published in International Journal of Microwave Engineering and Technology · Vol. 1, Issue 2, 2015 · pp. 1–6 Read article
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DESIGN OF HIGH PERFORMANCE WIDE BAND COMPACT BRANCH LINE COUPLER USING PCB TECHNOLOGY
Abstract: This paper comprises designing of a wide band Branch Line Coupler by using PCB technology. The size is greatly reduced by using only patch on substrate without ground. The proposed designed coupler is working for 0-3 GHz frequency. The main concern of this paper to design and fabricate a compact branch line coupler with high performance and measured values well matched with simulation. The simulation can be achieved by using …
Published in International Journal of Microwave Engineering and Technology · Vol. 3, Issue 1, 2017 · pp. 6–10 Read article
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DOUBLE U-SLOTTED CIRCULARLY POLARIZED MICROSTRIP ANTENNA WITH DEFECTED GROUND STRUCTURE
Abstract: Double U-slot truncated patch antenna is designs and simulates frequency in microstrip patch antenna using Defected ground structures with co-axial feeding. This paper presents a circular polarized (CP) Double U-slot microstrip antenna with single band for wireless communications system application which is suitable for the 2.35 GHz single-band operations. Antenna design in double U-slot truncated patch in Defected ground structure. The proposed antenna designed on FR-4(lossy) with dielectric constant of …
Published in International Journal of Microwave Engineering and Technology · Vol. 3, Issue 2, 2017 · pp. 14–18 Read article
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Augmentation in Parameters of S Band Microstrip patch Antenna using Metamaterial with Varactor Diode
Abstract: In this paper S band rectangular microstrip patch antenna is designed and its parameters like return loss, band width, VSWR, directivity, radiation efficiency and size reduction are analysed. Then a metamaterial structure of “Split rectangular Rings” with thin wire strip is designed such that it exhibits negative permittivity and negative permeability at the same frequency as that of inset fed rectangular microstrip patch antenna. Here “Nicolson ross wear” (NRW) parameters …
Published in International Journal of Microwave Engineering and Technology · Vol. 3, Issue 2, 2017 · pp. 32–40 Read article
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Circular Head-Shape Slotted Circularly Polarized Microstrip Antenna
Abstract: In this paper, one of the important parameter a is circular polarization. The design consists of square microstrip patch antenna using circular head-shape slot in second quadrant of the patch. Microstrip patch antenna is low profile, low cost antenna. A design of coaxial feed circular polarized, square shape microstrip antenna is presented and simulated by using CST 2010 and 4.4 relative permittivity law cost FR-4 (lossy) substrate are used. The …
Published in International Journal of Microwave Engineering and Technology · Vol. 3, Issue 1, 2017 · pp. 18–22 Read article
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Designing and Simulation of Dual Band Antenna using CPW Feeding
Abstract: ABSTRACTA dual-band antenna is proposed in this paper based on a coplanar waveguide feeding technique. This proposed antenna has 70 MHz and 426 MHz maximum bandwidth and they radiate at 1.5 and 2.56 GHz. Maximum return loss and average gain is -40 dBi and 3.0 dBi. A proposed monopole antenna is a combination of slotted rectangular and triangular-shaped structures. A 90-degree inclined T shaped stub was used to provide upper …
Published in International Journal of Microwave Engineering and Technology · Vol. 6, Issue 1, 2020 · pp. 7–13 Read article
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Gain Enhancement with Microstrip Patch Antenna Array and Slot
Abstract: ABSTRACTIn this study, a microstrip fed patch antenna array for application in the ISM band was implemented using the HFSS software. A slot antenna array was designed with the purpose of gain enhancement as well as reduction of return loss. There is some fluctuations from the desired design frequency due to some designing error and some imperfection in the impedance matching at the feeding point which can be further be …
Published in International Journal of Microwave Engineering and Technology · Vol. 6, Issue 1, 2020 · pp. 18–26 Read article
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A Microstrip Rat-Race Coupler for Narrow-Band Operation in the X-Band
Abstract: This paper proposes, designs, describes, analyses, and simulates a novel microstrip rat-race coupler for narrow-band operations in the X-band (8 GHz to 12 GHz), namely the 9.5 GHz to 10.3 GHz sub-band. This proposed four-port passive microwave device was realized utilizing microstrip technology with pure copper (lossy) being used as a metal in the conducting layers (transmission and ground plates) and Rogers TMM6 (lossy) being used in the dielectric layer. …
Published in International Journal of Microwave Engineering and Technology · Vol. 7, Issue 1, 2021 · pp. 18–22 Read article
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Enriched Technique for DG Placement and Sizing by GA Optimization
Abstract: The demand of proficient and high quality power is rising in the world of electricity. Power utilities are facing major challenges as the demand of power system is growing exponentially. To meet this demand, the present need is to provide the consumer demand locally by Distributed Generation (DG). However, a large number of DG units in a distribution system may occasionally provide to high levels of harmonic distortion even though …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 2, Issue 2, 2016 · pp. 1–12 Read article
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Design and Enhanced the Parameters of Wide Band Miniaturized Wilkinson Power Divider
Abstract: In this paper a wide band Wilkinson power divider is designed and proposed by using innovative technique i.e. using patch on substrate without ground and size can be largely reduced by using lumped element i.e. resistance (100 Ω). The main focus on this power divider is very compact as much as possible in size and also power is equally divided. This Wilkinson power divider is working at resonant frequency 0-300MHz. …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 3, Issue 1, 2017 · pp. 1–5 Read article
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Load Frequency Control of Interconnected Power System by Conventional and Facts Devices
Abstract: The stability of power systems has been and continues to be of major concern in system operation. Modern electrical power systems have grown to a large complexity due to increasing interconnections, installation of large generating units, and extra-high voltage tie lines, etc. Transient stability is the ability of the power system to maintain synchronism when subjected to a severe transient disturbance, such as a fault on transmission facilities, sudden loss …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 4, Issue 2, 2018 · pp. 9–15 Read article
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Simulation and Analysis of Grid-connected PV System with Active Filter based on P-Q Theory
Abstract: This paper presents a comprehensive analysis of two grid-connected photovoltaic (PV) systems, one with a 100-kW capacity and the other with a 25-kW capacity, incorporating an active filter based on the Instantaneous Reactive Power Theory (P-Q theory). In comparison to passive filters, the active filter based on the P-Q theory offers several advantages. While passive filters are limited in their ability to adapt to varying grid conditions and load profiles, …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 9, Issue 2, 2023 · pp. 1–11 Read article
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Designing of Circular Patch Dual-Band Antenna for L- Band Applications
Abstract: ABSTRACTIn this paper, a circular patch with symmetric rectangular slots is presented. This circular patch is operating on dual frequencies 1.63 GHz and 1.93 GHz which is significant frequencies for various L-band applications. Implemented stub lines between the circular patch played a vital role in reducing the size of the antenna and the parameters as compared to other available antenna at the same frequency of operation. -10dB band width of …
Published in International Journal of Telecommunications & Emerging Technologies · Vol. 6, Issue 1, 2020 · pp. 1–13 Read article
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Nanotechnology: An Antidote for Alzheimer's Disease
Abstract: Alzheimer's disease (AD) is a type of dementia that causes problems with memory, thinking and behaviour. Symptoms usually develop slowly and get worse over time, becoming severe enough to interfere with daily tasks. This article describes different stages of AD along with how it is different from other memory loss issues. Every old-age-related memory loss cannot be AD. Nanotechnology is an emerging branch of science which deals with matter at …
Published in International journal of Nanobiotechnology · Vol. 4, Issue 1, 2018 · pp. 19–27 Read article
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The Potential Application of Walnut Shells as Biofillers for Natural Rubber Composites
Abstract: It was evaluated whether walnut shells should be used as filler in composites made of natural rubber. Samples of walnut shells were ground to fine powders, sieved through a 75 μm mesh, and were used in compounding natural rubber using varying filler loading of unfilled, 20 hpr, 30 hpr, 40 hpr, and 50 hpr. The physicochemical analysis results of the walnut shell powder were 5.30, 10.10%, 2.50%, 43.70%, 49.70 mg/g, …
Published in International Journal of Composite Materials and Matrices · Vol. 8, Issue 2, 2022 · pp. 30–34 Read article
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Design and Fabrication of Trammel Balls
Abstract: Transportation of water plays a vital role in the survival of a growing population. If the scarcity of water is one major issue, transportation of water using tankers have their own share. Water in a partially filled container, when induced with external energy (motion), generates slosh and surge. Both slosh and surge effects work as a resistive factor during transportation. To eliminate the same, few holes are drilled at pre-desired …
Published in International Journal of Mechanics and Design · Vol. 5, Issue 2, 2019 · pp. 24–39 Read article